EP3127264B1 - Saut d'intervalles de temps pilote - Google Patents

Saut d'intervalles de temps pilote Download PDF

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Publication number
EP3127264B1
EP3127264B1 EP14722746.6A EP14722746A EP3127264B1 EP 3127264 B1 EP3127264 B1 EP 3127264B1 EP 14722746 A EP14722746 A EP 14722746A EP 3127264 B1 EP3127264 B1 EP 3127264B1
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Prior art keywords
header
time slots
allocation
time slot
predetermined scheme
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EP14722746.6A
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German (de)
English (en)
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EP3127264A1 (fr
Inventor
Erik Bengtsson
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Sony Group Corp
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Sony Group Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided

Definitions

  • the Third Generation Partnership Project (3GPP) radio access network (RAN) collaboration has addressed massive MIMO systems, and the proposed frame structure is a time division duplex (TDD) with a "header" time slot for user equipment (UE) or user device pilot or training sequence transmission, an uplink (UL) timeslot (optional) and a downlink (DL) timeslot.
  • TDD time division duplex
  • UE user equipment
  • UL uplink
  • DL downlink
  • US2013121189 relates to potential interference between devices that may occur when communications of a single radio access technology (RAT), or different radio access technologies in a proximate communication spectrum are operating at the same time.
  • RAT radio access technology
  • the time division duplex (TDD) configuration of one or more conflicting device may be altered. For example, at the edge of a communication region, TDD configurations used by edge base stations to communicate with mobile devices may be set to reduce interference.
  • communications of a first device may be altered so the first device schedules uplink communications when a second device also has uplink communications scheduled.
  • US2008187027 relates to systems and methodologies described to facilitate defining and utilizing hopping patterns to transmit broadband pilot signals in a wireless communications network. Portions of bandwidth can be dedicated to transmitting the broadband pilot data, and patterns can be utilized to hop across frequencies in given time periods to effectively utilize the entire dedicated bandwidth. Moreover, the periodicity for transmitting the data is configurable to allow devices requiring additional scheduling (e.g., high activity devices) to transmit the broadband pilot data more frequently. The hopping patterns can also hop across cyclic shifts of the patterns to provide optimum diversity for transmitting broadband pilot signals.
  • US2013301570 describes a method of wireless communications which includes adapting to downlink/uplink resource allocations.
  • the downlink/uplink communications may be adjusted according to time division duplexed (TDD) configurations of serving and neighbor cells.
  • TDD time division duplexed
  • the proposed frame structure is TDD with a "header", UL and DL.
  • the header or pilot time slots for multiple UEs should be orthogonal (non-overlapping). This may be difficult because the pilot time slot space or time allocation is limited.
  • One option is to achieve orthogonality by assigning a time slot within the header for each unique UE in a particular area, such as a cell.
  • the limited number of time slots particularly in densely populated cells, may require that time slots are reused for multiple UEs. Further, in some unlicensed bands, reuse of time slots may be required.
  • CSI channel state information
  • Embodiments are directed to systems, methods and computer program products for pilot time slot hopping to mitigate interference-based pilot time slot contamination.
  • Embodiments include generating a multiple input multiple output (MIMO) system message frame structure comprising a header comprising a plurality of header time slots, an uplink (UL) time slot (optional), and a downlink (DL) time slot.
  • Generating includes determining, based on a predetermined scheme, allocation of at least one of the plurality of header time slots to at least one user device within a predetermined area.
  • the scheme may be or include a pseudo-random scheme, a cyclic scheme, a non-random scheme, an orthogonal scheme and/or the like.
  • FIG. 1 diagram illustrates a MIMO system message frame structure where UE1 and UE2 have been allocated different time slots within the header for each training sequence according to embodiments of the invention. As shown, for each training sequence, the time slots allocated to UE1 and UE2 do not overlap and therefore, orthogonality is achieved.
  • FIG. 2 a network environment 200 is illustrated in accordance with one embodiment of the present invention.
  • the network system 208 is operatively coupled, via a network 201 to the user equipment 204 and/or 206.
  • the network system 208 may send information to and receive information from the user equipment devices 204 and/or 206.
  • Figure 2 illustrates only one example of an embodiment of a network environment 200, and it will be appreciated that in other embodiments one or more of the systems, devices, or servers may be combined into a single system, device, or server, or be made up of multiple systems, devices, or servers.
  • the network 201 may be a global area network (GAN), such as the Internet, a wide area network (WAN), a local area network (LAN), a telecommunication network or any other type of network or combination of networks.
  • GAN global area network
  • the network 201 may provide for wireline, wireless, or a combination wireline and wireless communication between devices on the network 201.
  • the users 202 and 205 are individuals who maintain cellular products with one or more providers.
  • the network system 208 generally comprises a communication device 246, a processing device 248, and a memory device 250.
  • processing device generally includes circuitry used for implementing the communication and/or logic functions of the particular system.
  • a processing device may include a digital signal processor device, a microprocessor device, and various analog-to-digital converters, digital-to-analog converters, and other support circuits and/or combinations of the foregoing. Control and signal processing functions of the system are allocated between these processing devices according to their respective capabilities.
  • the processing device may include functionality to operate one or more software programs based on computer-readable instructions thereof, which may be stored in a memory device.
  • the processing device 248 is operatively coupled to the communication device 246 and the memory device 250.
  • the processing device 248 uses the communication device 246 to communicate with the network 201 and other devices on the network 201.
  • the communication device 246 generally comprises a modem, server, or other device for communicating with other devices on the network 201.
  • the network system 208 comprises computer-readable instructions 254 stored in the memory device 250, which in one embodiment includes the computer-readable instructions 254 of an application 258 including instructions for performing one or more processes and/or method steps discussed herein and/or one or more processes and/or method steps not discussed herein.
  • the memory device 250 includes data storage 252 for storing data related to and/or used by the application 258.
  • the user equipment 206 (or user device) generally comprises a communication device 236, a processing device 238, and a memory device 240.
  • the processing device 238 is operatively coupled to the communication device 236 and the memory device 240.
  • the processing device 238 may send or receive data from the user equipment 204, and/or the network system 208 via the communication device 236 over a network 201.
  • the communication device 236 generally comprises a modem, server, or other device for communicating with other devices on the network 201.
  • the user equipment 206 comprises computer-readable instructions 242 stored in the memory device 240, which in one embodiment includes the computer-readable instructions 242 of an application 244 including instructions for performing one or more processes and/or method steps discussed herein and/or one or more processes and/or method steps not discussed herein.
  • the first step of method 300 is generating, using a processing device (such as a processing device of a base station or access point), a multiple input multiple output (MIMO) system message frame structure.
  • the frame structure includes a header comprising a plurality of header time slots, an uplink (UL) time slot, and a downlink (DL) time slot.
  • UL uplink
  • DL downlink
  • the frame structure only includes pilot and DL time slots and does not include UL time slots. Accordingly, such frames include no payload and may be utilized for UEs in idle mode.
  • Generating the message frame structure includes determining, based on a predetermined scheme, allocation of at least one of the plurality of header time slots to at least one user device within a predetermined area.
  • the scheme may be pseudo-random, cyclical, non-random, orthogonal and/or the like.
  • the header is a UE training sequence header and it may be called a pilot time slot.
  • each of the plurality of BSs and/or APs are preprogrammed for time synchronization of the frame structure such that each BS and/or AP recognizes when in time the header occurs during MIMO system message transmission.
  • the BS/APs are contemporaneously programmed based on a feature, method, algorithm, process, application or the like.
  • the BS/AP allocates the pattern, but in other embodiments, each UE selects a pattern and a UE-ID is included in the pilot time slot.
  • Orthogonal hopping patterns might be generated in different ways. For example, in some cases different random patterns are selected as discussed above. However, in other cases, the same pattern may be used with each UE selecting or being allocated (by a BS/AP) different start points or the same "random pattern function" but with different seeds.
  • the method 300 includes periodically determining re-allocation, based on the predetermined scheme, of at least one of the plurality of header time slots to at least one user device within the predetermined area, as represented by block 330.
  • re-allocation may be periodically determined at least every millisecond.
  • a method 400 includes some steps that may be included with the steps discussed with reference to method 300 of Figure 3 according to embodiments of the invention.
  • the system determines whether interference-based pilot time slot contamination mitigation is needed. This may be done by detecting whether contamination or interference of transmission is occurring on the network.
  • the system may determine contamination is occurring in a variety of ways. For example, pilot contamination will cause increased BER (bit error sate), SNR (signal to noise and interferer ratio) degradation or contamination may possibly be detected in the footprint. Applying time slot hopping might mitigate such contamination by itself or may require additional methods for effective contamination mitigation. Accordingly, other tools may be used in conjunction with the time hopping methods disclosure herein to improve communication.
  • Such other methods that might be used in conjunction include frequency band re-selection, synchronization to neighbor cells, applying additional multiple access (MA) method(s) and/or applying spreading (coding), and/or changing modulation scheme(s) for higher robustness.
  • synchronization might be required in order for hopping to assist in mitigation of contamination, therefore requiring pairing with another method in some cases. For example, if a UE or BS/AP detects high BER and attempts to change the pilot time slot (based on a standard time slot allocation) without improving the high BER, time slot hopping can be activated and average BER may thereby improve.
  • generating the MIMO system message frame structure includes determining allocation of the at least one of the plurality of header time slots to the at least one UE. In other words, allocation of the header time slots to the UEs may be performed in response to a determination that contamination mitigation is needed.
  • the method includes maintaining present allocation of the header time slots to the UEs.
  • the system may maintain the current time slot allocation in response to determining that no contamination mitigation is necessary.
  • the system may determine that contamination is not occurring (or is not likely to occur) by measuring metrics described above such as the BER. If one or more of such metrics are better, time slot hopping may be deactivated. In some cases, one or more of the metrics are continually (or periodically) monitored when/while time slot hopping is deactivated, and if it is determined that one or more of the metrics is not meeting desired thresholds or standards, then time hopping may then be reactivated. For example, the system may detect that there is high BER on only some frames when a collision occurs. In such a cases, the system may deactivate time slot hopping and finding/allocating an open or "free" time slot may prove more economical and/or efficient.
  • the method includes detecting that interference-based pilot time slot contamination is occurring after generating the MIMO system message frame structure (see step 310. Then, in response to detecting that contamination is occurring with the originally allocated time slots, the method then determines re-allocation.
  • the re-allocation may be based on the same predetermined scheme that was used in the original allocation.
  • allocation based on predetermined (or dynamically selected) schemes is only applied to one or more sub-sets of the entire set of pilot time slots.
  • the plurality of header time slots may be broken into a first plurality of header time slots and a second plurality of header time slots, where the first plurality of header time slots and the second plurality of header time slots are different.
  • the allocation of one of the sub-sets of time slots may be determined based on the predetermined (or dynamically selected) scheme and allocation of the other sub-set(s) may be based on some other scheme, such as a simple assignment of time slots to UEs.
  • the system uses different patterns or schemes dynamically selected in order to avoid using the same schemes. Then, as represented by block 520, the system may determine re-allocation based on a second predetermined scheme that is different than the originally used scheme.
  • a method 500 includes steps that may be included with the steps discussed with reference to method 300 of Figure 3 .
  • allocation is based on one of a plurality of predetermined schemes.
  • Generating the message frame structure may include dynamically selecting, in order to avoid allocation of the same header time slots to multiple user devices, a different predetermined scheme for each re-allocation of header time slots, as represented by block 510. Then, the system determines re-allocation periodically and/or as needed to avoid contamination, based on the dynamically selected predetermined scheme, as represented by block 520.
  • various embodiments of the invention enable orthogonal allocation of pilot time slots using pilot time slot hopping methods discussed herein.
  • a possible contamination from a neighboring cell may have the same system impact but will not harm only a single UE's transmissions.
  • introduction of time slot hopping has little or no throughput cost.
  • the present invention may include and/or be embodied as an apparatus (including, for example, a system, machine, device, computer program product, and/or the like), as a method (including, for example, a business method, computer-implemented process, and/or the like), or as any combination of the foregoing.
  • embodiments of the present invention may take the form of an entirely business method embodiment, an entirely software embodiment (including firmware, resident software, micro-code, stored procedures in a database, etc.), an entirely hardware embodiment, or an embodiment combining business method, software, and hardware aspects that may generally be referred to herein as a "system.”
  • embodiments of the present invention may take the form of a computer program product that includes a computer-readable storage medium having one or more computer-executable program code portions stored therein.
  • a processor which may include one or more processors, may be "configured to" perform a certain function in a variety of ways, including, for example, by having one or more general-purpose circuits perform the function by executing one or more computer-executable program code portions embodied in a computer-readable medium, and/or by having one or more application-specific circuits perform the function.
  • the computer-readable medium may include, but is not limited to, a non-transitory computer-readable medium, such as a tangible electronic, magnetic, optical, electromagnetic, infrared, and/or semiconductor system, device, and/or other apparatus.
  • the non-transitory computer-readable medium includes a tangible medium such as a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), a compact disc read-only memory (CD-ROM), and/or some other tangible optical and/or magnetic storage device.
  • the computer-readable medium may be transitory, such as, for example, a propagation signal including computer-executable program code portions embodied therein.
  • One or more computer-executable program code portions for carrying out operations of the present invention may include object-oriented, scripted, and/or unscripted programming languages, such as, for example, Java, Perl, Smalltalk, C++, SAS, SQL, Python, Objective C, JavaScript, and/or the like.
  • the one or more computer-executable program code portions for carrying out operations of embodiments of the present invention are written in conventional procedural programming languages, such as the "C" programming languages and/or similar programming languages.
  • the computer program code may alternatively or additionally be written in one or more multi-paradigm programming languages, such as, for example, F#.
  • These one or more computer-executable program code portions may be provided to a processor of a general purpose computer, special purpose computer, and/ or some other programmable data processing apparatus in order to produce a particular machine, such that the one or more computer-executable program code portions, which execute via the processor of the computer and/or other programmable data processing apparatus, create mechanisms for implementing the steps and/or functions represented by the flowchart(s) and/or block diagram block(s).
  • the one or more computer-executable program code portions may be stored in a transitory and/or non-transitory computer-readable medium (e.g., a memory, etc.) that can direct, instruct, and/or cause a computer and/or other programmable data processing apparatus to function in a particular manner, such that the computer-executable program code portions stored in the computer-readable medium produce an article of manufacture including instruction mechanisms which implement the steps and/or functions specified in the flowchart(s) and/or block diagram block(s).
  • a transitory and/or non-transitory computer-readable medium e.g., a memory, etc.
  • the one or more computer-executable program code portions may also be loaded onto a computer and/or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer and/or other programmable apparatus.
  • this produces a computer-implemented process such that the one or more computer-executable program code portions which execute on the computer and/or other programmable apparatus provide operational steps to implement the steps specified in the flowchart(s) and/or the functions specified in the block diagram block(s).
  • computer-implemented steps may be combined with, and/or replaced with, operator- and/or human-implemented steps in order to carry out an embodiment of the present invention.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Claims (10)

  1. Procédé pour un saut d'intervalle de temps pilote dans un réseau, ce procédé comprenant :
    la génération (310), en utilisant un dispositif de traitement, d'une structure de trame de message de système entrée multiple sortie multiple, MIMO, comprenant un intervalle de temps de liaison descendante et un en-tête comprenant une pluralité d'intervalles de temps d'en-tête ;
    cette génération comprenant la détermination (320), en se basant sur un plan prédéterminé, de l'attribution d'au moins un de la pluralité d'intervalles de temps d'en-tête comme un intervalle de temps de signal pilote à au moins un dispositif utilisateur à l'intérieur d'une cellule ;
    ce procédé étant caractérisé par
    la surveillance périodique d'une mesure métrique indicative d'une contamination de pilote afin de déterminer une réattribution (330),
    si une contamination de pilote est indiquée (420) tandis que le saut d'intervalle de temps de signal pilote est désactivé, alors l'activation du saut d'intervalle de temps de signal pilote dans lequel l'intervalle de temps de signal pilote est réattribué ; et
    si une contamination de pilote n'est pas indiquée (430), alors le maintien d'une attribution d'intervalle de temps courant de la pluralité d'intervalles de temps d'en-tête, et la désactivation du saut d'intervalle de temps de signal pilote.
  2. Procédé selon la revendication 1, dans lequel l'en-tête est un en-tête de séquence d'apprentissage de dispositif.
  3. Procédé selon la revendication 1, dans lequel les intervalles de temps d'en-tête sont des intervalles de temps pilotes.
  4. Procédé selon la revendication 1,
    dans lequel une d'une pluralité de stations de base (BSs) et/ou de points d'accès (APs) comprend le dispositif de traitement ; et
    ce procédé comprenant en outre l'étape de programmation de chacune de la pluralité de BSs et/ou d'APs pour la synchronisation temporelle de la structure de trame de manière à ce que chaque BS et/ou AP reconnaisse quand l'en-tête se produit dans le temps pendant une transmission de message de système MIMO.
  5. Procédé selon la revendication 1,
    dans lequel la pluralité d'intervalles de temps d'en-tête comprend une première pluralité d'intervalles de temps d'en-tête et une deuxième pluralité d'intervalles de temps d'en-tête ;
    dans lequel la première pluralité d'intervalles de temps d'en-tête et la deuxième pluralité d'intervalles de temps d'en-tête sont différentes ; et
    dans lequel la détermination (320, 420) de l'attribution d'au moins un de la pluralité d'intervalles de temps d'en-tête à au moins un dispositif utilisateur comprend l'attribution de la première pluralité d'intervalles de temps d'en-tête en se basant sur le plan prédéterminé et sans déterminer l'attribution de la deuxième pluralité d'intervalles de temps d'en-tête en se basant sur le plan prédéterminé.
  6. Procédé selon la revendication la revendication 1, dans lequel la génération de la structure de trame de message de système MIMO comprend en outre :
    la détermination (520) d'une réattribution, en se basant sur un deuxième plan prédéterminé, d'au moins un de la pluralité d'intervalles de temps d'en-tête à au moins un dispositif utilisateur à l'intérieur de la zone prédéterminée ; et
    dans lequel :
    le deuxième plan prédéterminé est le même que le plan prédéterminé ;
    le deuxième plan étant lancé à un deuxième moment de début différent d'un moment de début du plan prédéterminé ; ou
    le deuxième plan et le plan prédéterminé utilisant tous les deux la même fonction à motif pseudo-aléatoire mais le deuxième plan prédéterminé utilisant au moins une graine différente de celle utilisée par le plan prédéterminé ; ou
    le deuxième plan prédéterminé étant différent du plan prédéterminé.
  7. Procédé selon la revendication 1,
    dans lequel l'attribution est basée sur un d'une pluralité de plans prédéterminés ;
    dans lequel la génération (310, 420) de la structure de trame de message de système MIMO comprend en outre :
    la sélection dynamique (510), afin d'éviter l'attribution des mêmes intervalles de temps d'en-tête à des dispositifs utilisateurs multiples, d'un plan prédéterminé différent pour chaque réattribution d'intervalles de temps d'en-tête ; et
    la détermination (520) d'une réattribution nécessaire pour éviter toute contamination, en se basant sur le plan prédéterminé sélectionné dynamiquement, d'au moins un de la pluralité d'intervalles de temps d'en-tête à au moins un dispositif utilisateur à l'intérieur de la cellule.
  8. Appareil (208) pour un saut d'intervalle de temps pilote, cet appareil comprenant :
    une mémoire (250) ;
    un processeur (248) ; et
    un module (254) stocké dans la mémoire (250), exécutable par le processeur, et configuré de façon à :
    générer (310), en utilisant un dispositif de traitement, une structure de trame de message de système entrée multiple sortie multiple, MIMO, comprenant un intervalle de temps de liaison descendante et un en-tête comprenant une pluralité d'intervalles de temps d'en-tête ;
    cette génération comprenant la détermination (320), en se basant sur un plan prédéterminé, de l'attribution d'au moins un de la pluralité d'intervalles de temps d'en-tête corne un intervalle de temps de signal pilote à au moins un dispositif utilisateur à l'intérieur d'une cellule ;
    ce module étant caractérisé en ce qu'il est configuré de façon à :
    surveiller périodiquement une mesure métrique d'une contamination de pilote afin de déterminer une réattribution (410),
    si une contamination de pilote est indiquée (420) tandis que le saut d'intervalle de temps de signal pilote est désactivé, alors l'activation du saut d'intervalle de temps de signal pilote dans lequel l'intervalle de temps de signal pilote est réattribué ; et
    si une contamination de pilote n'est pas indiquée (430), alors le maintien d'une attribution d'intervalle de temps courant de la pluralité d'intervalles de temps d'en-tête et la désactivation du saut d'intervalle de temps de signal pilote.
  9. Appareil selon la revendication 8,
    cet appareil (208) étant un d'une pluralité de stations de base (BSs) et/ou de points d'accès (APs) ; et
    chacun de la pluralité de BSs et/ou d'Aps étant programmé pour la synchronisation temporelle de la structure de trame de manière à ce que chaque BS et/ou AP reconnaisse quand l'en-tête se produit dans le temps pendant une transmission de message de système MIMO.
  10. Appareil selon la revendication 8,
    dans lequel la pluralité d'intervalles de temps d'en-tête comprend une première pluralité d'intervalles de temps d'en-tête et une deuxième pluralité d'intervalles de temps d'en-tête ;
    dans lequel la première pluralité d'intervalles de temps d'en-tête et la deuxième pluralité d'intervalles de temps d'en-tête sont différentes ; et
    dans lequel la détermination (320, 420) de l'attribution d'au moins un de la pluralité d'intervalles de temps d'en-tête à au moins un dispositif utilisateur comprend la détermination de l'attribution de la première pluralité d'intervalles de temps d'en-tête en se basant sur le plan prédéterminé et sans déterminer l'attribution de la deuxième pluralité d'intervalles de temps d'en-tête en se basant sur le plan prédéterminé.
EP14722746.6A 2014-03-31 2014-03-31 Saut d'intervalles de temps pilote Active EP3127264B1 (fr)

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PCT/IB2014/060314 WO2015150859A1 (fr) 2014-03-31 2014-03-31 Saut d'intervalles de temps pilote

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EP3127264B1 true EP3127264B1 (fr) 2022-07-13

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US20160277167A1 (en) 2016-09-22
US10735167B2 (en) 2020-08-04
CN106134123B (zh) 2019-07-16
WO2015150859A1 (fr) 2015-10-08
EP3127264A1 (fr) 2017-02-08
US20190013918A1 (en) 2019-01-10

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